I'll do a full review on your user interface by experiencing every aspect; how it looks off the bat, if the site is clearly conveying what it's about/selling/etc, how easily it navigates, using the interactive tools/links and thorough testing of anything else on your site (signing up, logging in, signing up for newsletters, contacting customer support, interacting in the comments section if applicable, etc.) Content writing for whatever product or service your site offers.